Photo: Tatters ✾, CC0 (via Wikimedia Commons)
Tonka Bean
Dipteryx odorata
Also known as Cumaru, Tonka Seed, Tonquin Bean, Tonco Bean
Key benefits
✦Traditional uses
✦Long before it reached European noses, the tonka bean was gathered by Indigenous peoples of the Amazon and the Guianas, who valued its rich, honeyed fragrance and carried the beans as personal scent and in ceremonial contexts. Colonial traders in French Guiana and Venezuela began exporting the beans in the eighteenth century, and by the 1800s tonka had become a prized note in European perfumery and a flavoring slipped into pipe tobacco and rum. In parts of the Caribbean and the American South, a single tonka bean carried in a pocket or mojo bag became a folk charm for luck, love, and gambling, a tradition still remembered by root workers today. Its warm, sweet scent, often described as vanilla crossed with fresh-cut hay and almond, remains one of the most recognizable in the natural perfumer's cabinet.
How to grow & use it
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- ✦Vanilla
- ✦Cacao
- ✦Cinnamon
- ✦Vanilla bean (for aroma, in far greater quantity)
- ✦A blend of vanilla, cinnamon, and a touch of bitter almond
“When a scent or a story needs something warmer than vanilla, quieter than cinnamon, and older than both.”
The compound coumarin, now used as a scent descriptor across the whole perfume industry, was first isolated from this very bean in 1820. It takes its name from cumaru, the tree's name among the Tupi and Galibi peoples of the Amazon.
Tonka bean is rich in coumarin, which can damage the liver and dangerously increase the effect of blood-thinning medications like warfarin; it's banned as a food additive in the US for this reason. Avoid it entirely in pregnancy, with liver disease, or if taking blood thinners, and don't attempt home teas or tinctures.